Thermolysis of 2-(N-acylamino)benzyl methyl ethers, in the presence of an acid catalyst and triphenylphosphine, or 2-(N-acylamino)benzylphosphonium salts is found to serve as a novel method for indole formation, in particular for the synthesis of 2-trifluoromethylindoles. The reaction of the benzyl methyl ethers is suggested to involve a phosphonium intermediate, which thermally decomposes to the indoles.
2-(N-酰
氨基)
苄基甲基醚在酸催化剂和
三苯基膦存在下,或在2-(N-酰
氨基)苄基膦盐的作用下的热分解被发现是一种新颖的
吲哚形成方法,特别用于合成
2-三氟甲基吲哚。
苄基甲基醚的反应被认为涉及一个膦盐中间体,该中间体通过热分解生成
吲哚。